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ARS Home » Pacific West Area » Davis, California » Western Human Nutrition Research Center » Obesity and Metabolism Research » Research » Publications at this Location » Publication #325640

Research Project: Improving Public Health by Understanding Diversity in Diet, Body, and Brain Interactions

Location: Obesity and Metabolism Research

Title: Plasma fatty acids, oxylipins, and risk of myocardial infarction: the Singapore Chinese health study

Author
item Sun, Ye
item Koh, Hiromi
item Choi, Hyungwon
item Koh, Woon-puay
item Yuan, Jian-min
item Newman, John
item Su, Jin
item Fang, Jinling
item Ong, Choon Nam
item Van Dam, Rob

Submitted to: Journal of Lipid Research
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 5/24/2016
Publication Date: 7/20/2016
Citation: Sun, Y., Koh, H.W., Choi, H., Koh, W., Yuan, J., Newman, J.W., Su, J., Fang, J., Ong, C., Van Dam, R.M. 2016. Plasma fatty acids, oxylipins, and risk of myocardial infarction: the Singapore Chinese health study. Journal of Lipid Research. 57:1300-1307.

Interpretive Summary: This study examined the prospective association between the risk of acute myocardial infarction (AMI) and both plasma fatty acids (FAs) and oxylipin mediators of inflammation in a Singapore Chinese population. As a part of the Singapore Chinese Health Study, a nested case-control study was conducted with 744 incident AMI cases and 744 matched controls aged 47-83 years. Nineteen plasma FAs and 12 oxylipins were quantified using mass spectrometry. These were grouped into 12 FA clusters and 5 oxylipin clusters using hierarchical clustering, and their associations with AMI risk were assessed. Plasma concentrations of long-chain n-3 FAs like those derived from cold water fatty fish (OR=0.67 per SD increase, 95% CI: 0.53-0.84, p<0.001) and the saturated fatty acid stearic acid (OR=0.65, 95% CI: 0.44-0.97, p=0.03) were inversely associated with AMI risk, whereas the polyunsaturated n6 fatty acid arachidonic acid (AA) was positively associated with AMI risk (OR=1.25, 95% CI: 1.03-1.52, p=0.02) in the multivariable model after adjustment for other the behavior of other FAs. Further adjustment for oxylipins did not substantially change these associations. Unexpectedly, a significant inverse association was observed between the AA-derived oxylipin thromboxane B2 (TXB2), an important marker of platelet function, and AMI risk (OR=0.81, 95% CI: 0.71-0.93, p=0.003). These data indicate that the risk of AMI is influenced by variation in plasma fatty acids in this Chinese population, but that the examined oxylipins were not key mediators of the FAs-AMI relation.

Technical Abstract: Objective: We aimed to examine the prospective association between plasma fatty acids (FAs), oxylipins and risk of acute myocardial infarction (AMI) in a Singapore Chinese population. Methods: A nested case-control study with 744 incident AMI cases and 744 matched controls aged 47-83 years was conducted within the Singapore Chinese Health Study. Nineteen plasma FAs and 12 oxylipins were quantified using mass spectrometry. These were grouped into 12 FA clusters and 5 oxylipin clusters using hierarchical clustering, and their associations with AMI risk were assessed. Results: Long-chain n-3 FAs (OR=0.67 per SD increase, 95% CI: 0.53-0.84, p<0.001) and stearic acid (OR=0.65, 95% CI: 0.44-0.97, p=0.03) were inversely associated with AMI risk, whereas arachidonic acid (AA) was positively associated with AMI risk (OR=1.25, 95% CI: 1.03-1.52, p=0.02) in the multivariable model with adjustment for other FA. Further adjustment for oxylipins did not substantially change these associations. A significant inverse association was observed between AA-derived oxylipin thromboxane B2 (TXB2) and AMI risk (OR=0.81, 95% CI: 0.71-0.93, p=0.003). Conclusions: The risk of AMI is influenced by variation in plasma fatty acids in this Chinese population. Our results do not suggest that the examined oxylipins were key mediators of the FAs-AMI relation.